○エラーメッセージ
NameError in Messages#index
Showing /Users/*******/projects/chat-space/app/views/messages/index.html.haml where line #6 raised:
undefined local variable or method `group' for #<#<Class:0x00007fec4a9d9098>:0x00007fec4c4cf398>
Did you mean? @group
○修正前
○修正後
＠の記述位置が違っていた